Basements that get water

[cfl...KING]

Thinking about doing a raised floor grow room in a basement that gets water when it rains heavy. There are Dehumidifiers but it isn't a humidity issue really. The basement will occasionally get around 2inches of water. There is a sub pump but the basement isn't even so there are puddles for the next couple days after a flood.

Basic idea is bricks to raise the wood frame about 4-5" up. Can't go too much more because of the ceiling only being around 6.5ft. my thoughts are that the water will dry faster from the heat of the lights. 2 1k air cooled.

I'm just worried about the potential mold issue under the floor of the room. Any specific materials or paint could seal the wood with? Treated wood prices are outrageous an hard to even get right now around here

 

[f-e]

Sounds like a breeding ground. Why does it flood. Stop it. There are plenty of tanking methods. We used a concrete with some sort of lube that made the particles sit closer together. Walls that had water coming though, became dry after troweling it on. Though if treated wood is expensive, you might want to find somewhere else to grow.

Edit. I guess you could put a tent on pallets, fed with air from the room above. So no cellar air gets in the tent. Might mean double tenting, but I do that all the time

 

[cfl...KING]

It comes thru one wall. No cracks or anything to fill. The wall has been coated with many different things over the years. It slowed it down but because of the location of the house an a underground water stream the only permanent solution was to dig up the entire outside an use something to cover the wall on the outside. That was what two different professionals said. Don't remember the exact details but it had to be done on the outside of the basement wall. Pretty much all the houses around get enough water in there basement to have built in sub pumps.

It not so much the cost of treated wood but actually availability at local home Depot an Lowes. That's why I was wondering about coatings/paint that I could use on the 2x6" frame boards an the plywood. I was thinking of using the thick plastic I use for the actual floor of the" grow room", to Cover the whole frame. Like build the 6' x 12' frame then cover the bottom with a single sheet of plastic before placing it on the bricks that will hold it up.

As far as air quality in the room I'm not concerned too much. I have enough filters an canfans to filter the incoming air, filter out going air an then have the lights sealed an cooled separately. Plus there is 2 large dehumidifiers.

The floods come an go rather quickly. But this isn't something I want to do twice.

 

[Switcher56]

It comes thru one wall. No cracks or anything to fill. The wall has been coated with many different things over the years. It slowed it down but because of the location of the house an a underground water stream the only permanent solution was to dig up the entire outside an use something to cover the wall on the outside. That was what two different professionals said. Don't remember the exact details but it had to be done on the outside of the basement wall. Pretty much all the houses around get enough water in there basement to have built in sub pumps.

It not so much the cost of treated wood but actually availability at local home Depot an Lowes. That's why I was wondering about coatings/paint that I could use on the 2x6" frame boards an the plywood. I was thinking of using the thick plastic I use for the actual floor of the" grow room", to Cover the whole frame. Like build the 6' x 12' frame then cover the bottom with a single sheet of plastic before placing it on the bricks that will hold it up.

As far as air quality in the room I'm not concerned too much. I have enough filters an canfans to filter the incoming air, filter out going air an then have the lights sealed an cooled separately. Plus there is 2 large dehumidifiers.

The floods come an go rather quickly. But this isn't something I want to do twice.

That was my thought as well. e.g improperly functioning drain tile.

 

[troutman]

Maybe, just place the pots on bricks and forget the wood for now to save money.
Long term solution would be dig the outside wall and tar or cement the brick wall
foundation. Increasing drainage around the house with drain tiles would also help.

 

[f-e]

When we are talking thick plastic, I presume we are talking DPM. Often 1000# it comes cut room size, because you put in in a hole before pouring the floor. It's nothing more than thick plastic, but a readily available route to buying it the right size and right price. If you relabel it pond liner, you can charge a lot more for the same product.

For coatings you can look at flat roof treatments. These days they make a roof size sheet with fibre mat and resins. Avoiding the problem of joining rolls. These roofs get a 20 year guaranty as even building movement isn't a problem. There are no joined sheets that may separate. The matting can come as preformed corners so laying it up is straight forward. Just place it, and slap it with the resin brush.

I did once see a cellar that had been lined with plastic and taped up. So it could leak all it wanted. That had a sump pump hole, but it was used long before I got there. I was taking it out, and it was a nasty micro-climate behind that sheet. We used the waterproof concrete made for tanking cellars.

 

[cfl...KING]

Maybe, just place the pots on bricks and forget the wood for now to save money.
Long term solution would be dig the outside wall and tar or cement the brick wall
foundation. Increasing drainage around the house with drain tiles would also help.

It a large basement with windows an a washer/dryer. So the potential for other lights being on while the plants are flowering is an issue. That's why I'm building a room.

 

[cfl...KING]

Treated wood for the floating floor has been aquired. Nex up get to wiring in new breakers for the 1ks an fans ect. My friend offered my a hood an bulb for free. Happen to be the same brand an 6" cooled like the 2 I already have. Might turn into a 3k watt room. Should put off enough heat to heat up my whole house this winter